NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days — NPA 726
8X8, INC. 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-01-30 726-236 0–9 XXXwhole prefix which blocks → TWC IP ENABLED SERVICES, LLC 793K SANANTONIO TX
2023-01-27 726-235 0–9 XXXwhole prefix which blocks → TWC IP ENABLED SERVICES, LLC 793K SANANTONIO TX
2023-01-25 726-726 0–9 XXXall 10 · 2 holders which blocks → EVOLVE CELLULAR, INC. 139F SANANTONIO TX
2023-01-24 726-233 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2023-01-20 726-266 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2022-10-11 726-232 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2022-10-06 726-230 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2022-09-26 726-229 0–9 XXXall 10 · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F SANANTONIO TX
2022-08-31 726-256 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2022-08-09 726-228 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2022-07-15 726-727 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H SANANTONIO TX
2022-07-12 726-227 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2022-06-22 726-226 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J SANANTONIO TX
2022-05-24 726-225 0–9 XXXall 10 · 3 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SANANTONIO TX
2022-05-23 726-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2022-03-15 726-224 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2022-03-14 726-219 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2022-03-14 726-220 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2022-03-14 726-221 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2022-03-07 726-437 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2022-02-03 726-567 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANANTONIO TX
2022-01-20 726-223 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2022-01-14 726-218 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2021-12-29 726-217 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J SANANTONIO TX
2021-12-28 726-348 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2021-12-15 726-582 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANANTONIO TX
2021-11-04 726-216 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2021-09-14 726-215 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2021-09-10 726-209 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2021-09-10 726-214 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2021-09-07 726-262 0–9 XXXall 10 · 6 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J SANANTONIO TX
2021-08-24 726-213 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2021-08-20 726-842 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANANTONIO TX
2021-07-09 726-208 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2021-06-30 726-212 0–9 XXXwhole prefix which blocks → TWC IP ENABLED SERVICES, LLC 793K SANANTONIO TX
2021-06-17 726-207 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SANANTONIO TX
2021-06-10 726-205 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2021-06-10 726-206 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2021-04-19 726-204 0–9 XXXall 10 · 2 holders which blocks → CALLWORKS CORPORATION 475J SANANTONIO TX
2021-04-16 726-500 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2021-04-06 726-822 0–9 XXXwhole prefix which blocks → TON80 COMMUNICATIONS, LLC 516J SANANTONIO TX
2021-03-31 726-203 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2021-03-26 726-202 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2021-03-26 726-895 0–9 XXXall 10 · 5 holders which blocks → TWILIO INTERNATIONAL, INC. 506J SANANTONIO TX
2021-01-13 726-336 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2020-12-08 726-610 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2020-11-27 726-400 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2020-09-25 726-201 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 SANANTONIO TX
2020-08-14 726-300 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SANANTONIO TX
2020-07-06 726-245 0–9 XXXall 10 · 4 holders which blocks → EVOLVE CELLULAR, INC. 139F SANANTONIO TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.